Use the information given about the angle ?, 0 ? ? ? 2?, to find the exact value of the indicated trigonometric function.tan ? = , ? < ? < Find cos(2?).

A.
B. - 
C.
D. - 


Answer: A

Mathematics

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A. x = -6?4
B. x = 
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D. x = -  

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What will be an ideal response?

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